A world's fair, also known as a universal exhibition or an expo, is a large international exhibition designed to showcase the achievements of nations.  These exhibitions vary in character and are held in different parts of the world at a specific site for a period of time, typically between three and six months. 
world’s fair, large international exhibition of a wide variety of industrial, scientific, and cultural items that are on display at a specific site for a period of time, ranging usually from three to six months.
For an annotated list of all world's fairs sanctioned by the Bureau International des Expositions (BIE), see list of world expositions. This is a list of international and colonial world's fairs, as well as a list of national exhibitions, a comprehensive chronological list of world's fairs (with notable permanent buildings built). Contents 1 1790s
The 1982 World’s Fair, formally known as the Knoxville International Energy Exposition, ran May 1 through October 31 under the theme “Energy Turns Our World” and would become recognized as the last successful World’s Fair held in America. More than 50 private organizations and companies took part in the Fair.
Oct 26, 2017 · On October 25, 2017, the U.S. Permanent Mission hosted a presentation at the OAS Permanent Council in support of the United States’ bid to host the 2023 World’s Fair. The presentation included the participation of Matthew Asada, the State Department’s Expo Officer, and Mark Ritchie, President and CEO of the Minnesota World’s Fair Bid Committee.
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